CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 143 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <p class="menu"> (c) <span id="hero"> (d) <span id="top">
2. 2.True or false: body is a class selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <div class="red" id="end">Hello</div> (a) #hero (b) span (c) .box (d) .red
4. 4.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
5. 5.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <h2> (c) <div id="logo"> (d) <h1 class="box">
6. 6.🎯 Which CSS selector matches this element?
   <p class="star" id="logo">Hello</p> (a) .logo (b) h1 (c) #star (d) #logo
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="box" id="logo">Hello</h1> (a) .box (b) .logo (c) .star (d) #box
8. 8.🎯 Which CSS selector matches this element?
   <div class="big" id="main">Hello</div> (a) span (b) .big (c) .main (d) .red
9. 9.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) #end (b) .logo (c) p (d) .box
10. 10.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
11. 11.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) div (b) #menu (c) .note (d) .menu
12. 12.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span id="note"> (c) <p class="red"> (d) <span class="note">
13. 13.True or false: #main is an id selector. (a) False (b) True
14. 14.True or false: .big is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <span class="red" id="intro">Hello</span> (a) .intro (b) .red (c) #red (d) .box
16. 16.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
18. 18.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which element does the selector #main style? (a) <div class="red"> (b) <li id="logo"> (c) <li class="main"> (d) <li id="main">
20. 20.🎯 Which element does the selector div style? (a) <h1 id="end"> (b) <div class="menu"> (c) <p class="menu"> (d) <span>
21. 21.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="logo"> (c) <div class="menu"> (d) <li id="end">
23. 23.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) span (b) .top (c) .menu (d) #star
24. 24.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) div (b) li (c) .main (d) .menu
25. 25.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Can many elements share the same class? (a) Yes (b) No
27. 27.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div class="big"> (c) <div id="big"> (d) <div class="red">
28. 28.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="red"> (c) <li class="big"> (d) <div class="box">
30. 30.True or false: .card is an id selector. (a) False (b) True
31. 31.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <div class="menu"> (c) <span class="note"> (d) <div id="star">
32. 32.True or false: #main is a class selector. (a) False (b) True
33. 33.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
35. 35.True or false: .star is a class selector. (a) True (b) False
36. 36.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h2 class="red"> (c) <h1 class="big"> (d) <h1 id="note">
37. 37.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p id="big">
38. 38.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p id="end"> (c) <p class="end"> (d) <h1 class="red">
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) div (b) li (c) .box (d) #red
40. 40.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector

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